From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Chart tracking the road work development and testing of different pistons for the 3 1/2 Litre Bentley.
| Identifier | ExFiles\Box 86\2\ scan0148 | |
| Date | 2nd November 1933 | |
| TITLE: PISTON DEVELOPMENT. 3 1/2 LITRE BENTLEY. (ROAD WORK.) TABLE HEADERS: PISTON | UNIT | MILES RUN (1000-10000) | FAILURE ROW E: PISTON: PIECE N°. E.B. 1026, A/P. 404. DIECAST, GRINDING E.B. 1025, SHRUNK ON GUD PINS. E, CHASSIS 1.B.IV UNIT: SPEC. B.6, RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel}2/AP 23-10-33, CYL. BLOCK., SHORT TYPE BARRELS. FAILURE: CAUSE OF STOP :- EXHAUST VALVE FAILURE. TEST CONCLUDED. SIMILAR PISTONS HAVING FAILED ON TEST BED. TEST 8. ROW F: PISTON: PIECE N°, AEROLITE PISTONS., Ex [obscured]7 UNIT., F, CHASSIS 4.B.IV UNIT: SPEC. B.3, RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel}11/AP 27-10-33, CYL. BLOCK., LONG TYPE BARRELS. FAILURE: CAUSE OF STOP :- R.R. PISTONS READY FOR TEST. ROW G: PISTON: PIECE N° E.B. 1299, A/P 404 DIE CAST, SPECIAL HEAT TREAT (CHILLED FROM THE DIE), STRENGTHENED GUD-PIN BOSS LEC. 3675, PUSH FIT GUD PINS, G, CHASSIS 4B.IV UNIT: SPEC. B.3., RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel}9/AP 30-10-33, CYL. BLOCK., LONG TYPE BARRELS. FAILURE: UNFINISHED. TEST CONCLUDED. CAUSE OF STOP :- SPRING-DRIVE FAILURE. SIMILAR TYPE PISTON FAILED ON TEST BED. TEST 7. ROW H: PISTON: PIECE N° E.B. 1299, A/P. 404 DIE CAST, GRINDING E.B. 1025, STRENGTHENED GUD. PIN BOSS LEC. 3675, PUSH FIT GUD PINS, CHILLED FROM DIE, H UNIT: SPEC., RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel}12/AP 2-11-33, CYL. BLOCK., SHORT TYPE BARRELS. FAILURE: PROCEEDING. TEST STOPPED. SIMILAR PISTONS FAILED ON TEST BED. SEE TEST 7. | ||